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发明名称
Improvements in or relating to electric wave filter devices
摘要
申请公布号
GB609231(A)
申请公布日期
1948.09.28
申请号
GB19460000545
申请日期
1946.01.07
申请人
GEOFFREY SARGOOD JAMES
发明人
分类号
H01P1/202
主分类号
H01P1/202
代理机构
代理人
主权项
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